Nut-lock.



P. GOPF.

NUT LOCK.

APPLICATION FILED APR18,1914.

1,130,810. Patented ManQ, 1915.

WITNESSES 2mm y 7% ATTORNEY IE NORRI: PETERS CO" PHOTO-LITHQ.WAFHINITON. D

ram

- 2 QCAMDEN,-NEW JERSEY.

, mmoca To all whom it may concern."

Be it known that I, FRANKGOFF, a'citizen of the United States, residingat Camden, in the countyof Camden and State of New Jersey, have inventeda new and useful Nut Look, of which the following is a specification.

The invention relates to improvements in nut looks.

The object of the present invention is to improve the construction ofnut locks. and to provide a simple, practical, and inexpensive nut lock,of strong and durable construction, designed for use on rail oints,machinery, and various other constructions subject to vibration, andcapable of effectually preventing a nut from accidentally unscrewmg.

A further object of the invention is to provide a nut lock of thischaracter, which will require no alteration in the construction of thethreaded bolt, and which will operate to lock the nut without injuringthe latter or the threads of the bolt, and at the same time, permit theready removal of the nut when desired.

With these and other objects in view the I invention consists in theconstruction and novel combination of parts hereinafter fully described,illustrated in the accompanying drawing, and pointed out in the claimhereto appended, it being understood that various changes in the form,proportion, size and minor details of construction, within the scope ofthe claim, may be resorted to without departing from the spirit orsacrificing any of the advantages of the invention.

In the drawing: Figure 1 is a side elevation of a nut lock constructedin accordance with this invention; Fig. 2 is a central longitudinalsectional view of the same, the threaded bolt being shown in elevation.Fig. 3 is a front elevation of the nut and its locking means.

Like numerals of reference designate corresponding parts in all thefigures of the drawing.

In the accompanying drawing, in which is illustrated the preferredembodiment of the invention, 1 designates a polygonal nut having a boltopening 2 and adapted to screw on the threaded portion 3 of a bolt 4 inthe usual manner. The nut is provided with a diagonally arranged bore 5extending from one of the outer or front corners of f Specification rLetters Patent.

if Patented Mar.9,,1915.

Application filed April 18, 1914. Serial No. 832,843.

the nut to the bolt opening 2 and communicatingptherewith at a pointintermediate of the front and rear faces of the nut, and threaded toreceive a locking screw 6. The locking screw 6 which is diagonallydisposed, is arranged perpendicular to the inclined outer side faces ofthe threads of the bolt 4, and its inner engaging end 7 is set at anangle or. inclination and coincides with the outer side faces of thethreads and is adapted to fit fiat against one of the side faces of thethreads and frictionally engage the same, whereby the nut may besecurely held against rotary movement without injuring the threads ofthe bolt. When it is desired to remove the nut, the screw is rotated ina direction to withdraw its inner engaging end out of contact with theface of the threads, and the nut may then be freely rotated on the bolt.By engaging the threads of the bolt in this manner, the locking nut maybe screwed sufficiently tight to hold the nut without liability ofinjuring the bolt.

In order to hold the locking screw in engagement with the threadedportion of the bolt, the said screw is equipped with a coiled spring 8interposed between the head 9 of the screw and the nut and having itsouter end 10 engaged with the head of the screw, and its inner end 11arranged to engage one of the faces of the polygonal nut. The outer end10 of the coiled spring is extended and is arranged at the left handedge of the nut in Fig. 8, in position to resist retrograde rotation ofthe screw, but instead of arranging the extended outer end of the springin position to engage the head of the locking screw in this manner, thespring may be connected or engaged with the screw in any other suitablemanner. By mounting the locking screw at one of the outer corners of thepolygonal nut, the screw not only projects beyond the front face and theadjacent side faces, so as to be within convenient reach, but aplurality of angularly related faces are in position to be engaged bythe inner end of the spring, thereby obviating thenecessity of providingrecesses, indentations, or other ratchet means, usually employed foranalogous purposes.

What is claimed is:

In a nut lock, the combination with a diagonally arranged bore disposedperpendicularly of'the' outer inclined side faces of the threads of thebolt, a locking screw mountedin the threaded bore of the nut and havinga fiat inner end face set at an angle or inclination and coinciding Withthe inclined outer side faces of the threads of the bolt and arranged tofit flat against and frictionally engage one of the sidefacesof thesame, and a coiled spring disposed on the outer portion of the lockingscrew and having its outer end engaged With the same;

the inner end of the spring being extended Copies of this patent may beobtained for five to form an engaging portion, and the screw beinglocated at one of the front corners of the polygonal nut, whereb apluralityof angiilarly disposed nut faces is presented to the engaginginner end of the spring.

In testimony, that, I claim the foregoing as myioWn I have heretoaffixed my signature in the presence of tWo Witnesses;

Witnesses BOYTON A AMs, ,Gr. TORAM.

FRANK GOFF. I

